Prerelease of 2025.08.003 with increased MOM restartfiles buffer

[dougiesquire]

@helenmacdonald is experiencing the following issue in the superaus regional domain

FATAL from PE     0: Restart file name(s) too long.

The issue is that the variable that stores the restart files in MOM is only allocated a length of 2048 and appending all of the restart filenames for this config exceeds that. This PR builds with a version of MOM with the allocated length increased to 4096 for Helen to use as she prepares for a conference next week.

---

🚀 The latest prerelease access-om3/pr247-2 at 6647b6c is here: #247 (comment) 🚀

[github-actions]

🚀 Attempted to deploy access-om3 Prerelease pr247-1 with commit 551927a

🖥️ Gadi Deployment ❌

[github-actions]

🚀 Attempted to deploy access-om3 Prerelease pr247-2 with commit 6647b6c

🖥️ Gadi Deployment ✔️

Usage Instructions

access-om3, defined in spack.yaml, will be deployed to Gadi as:

• 2025.08.003 as a Release (when merged).
• pr247-2 as a Prerelease (during this PR).

This Prerelease is accessible on Gadi using:

module use /g/data/vk83/prerelease/modules
module load access-om3/pr247-2

When using the above modules, the binaries shall be on your $PATH.

For advanced users, this Prerelease is also accessible on Gadi via /g/data/vk83/prerelease/apps/spack/1.1/spack in the access-om3-pr247-2 environment.
Due to inode-saving measures, one will have to manually untar the environment metadata before environment activation with tar -xf .spack-env .spack-env.tar. It will require one to have write privileges.

Configuration Information

This Prerelease is deployed using:

• access-nri/spack on branch 1.1
• ACCESS-NRI/upstream-spack-packages version access/v1.1
• access-nri/access-spack-packages version 2026.03.003
• access-nri/spack-config version 2026.05.004

If the above was not what was expected, commit changes to config/versions.json in this PR, or propose changes to build-cds config/settings.json.

[dougiesquire]

@helenmacdonald are you still using this?